Carburetor-lock mechanism



April 30, 1929. A, ROSTA 1,111,395

CCCCCCCCCCCCCCCCCCCCC SM A ril 30, 1929. A. ROSTAS 3 E CARBUREI'OR LOCK MECHANISM Filed July 18, 1927 4' Sheets-Sheet 2 I N VEN TOR.

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April 30, 1929. A. RGSTA'S I CARBURETOR LOCK rwcmmsm Filed July 18, 1927 4 Sneaks-Sheet 3 ff ic. 6.

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ATTORNEYJ Patented Apr. 30, 1929.

umreo STATES PATENT OFFICE.

ALOIS ROS'IlAS, F TBENTON, NEW JERSEY.

CARIBURETOR-LOGK MECHANISM.

Application filed fi'uly 18, 1927. Serial IE0 2%,604.

buretor to prevent unauthorized use of the automobile.

A further object ofthe invention is to provide a carburetor lock in which a rotatable cylinder supported within the float chamber has an opening therein registering with the communicating passage between the float and mixing-chambers of the carburetor, the rotatable cylinder being manually operable for shutting off communication between the float and mixing chambers of the carburetor with lock mechanism for holding thecylinder in its adjusted position and operating the stem of the float valve for shutting off the supply of gasoline to the float chamber.

With the above and other objects in view that will become apparent as the nature of the invention is better understood, the same consists inthe novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawmgs and cla med.

In the accompanying drawings wherein like reference characters are employed to designate corresponding parts throughout the several views. c j

V Figure 1 is a side clevational view, of an automobile partly broken away and showing the carburetor lock mechanism associated with the carburetor, the lock mechanism being controlled from the instrument board of the automobile; c

Figure 2 is aside elevational view of a carburetor, partly broken away and shown in section to illustrate the rotatable cylinder in the float chamber that is manually operable for closing communication between the float and mixing chambers of the carburetor;

Figure 3 is a detail sectional view taken,

with which openings in the rotatablewcylinder are adapted to register for receiving the tensioned lockin ins and with the float 1 O u i tnere being also illustrated in Figure 1, an

removed; V

Figure 5 1s a detail sectional view taken on line 5-5 of Figure 2, showing the opening in the rotatable cylinder that forms communication between the float and mixing chambers Figure 6 is a automobile with the lock casing for the carburetor mounted thereon;

Figure 7 is a vertical cross-sectional view taken on line 77 of Figure 6 showing the lock tumbler mechanism that is bodily shiftable within the lock casing and detachably connected to the operating wire. or rod, associated with the needle valve in the float chamber;

Figure 8 is a cross-sectional view taken on line 88 of Figure 7;

Figure 9 is a cross-sectional view taken on line 9-9 of Figure 7 showing the rotatably tensioned tumblers and the device for connecting the lock mechanism to the operating member for the needle valve in the float chamber; V

Figure 10'is a cross-sectional view taken on line 1010' ofFigure 9 showing the key within the lock mechanism and in position for shifting the lock tumblers; v

c v V 0 v fragmentary front eleva tional View of the instrument board ofthe Figure 11 is a longitudinal sectional view of the sleeve within the lock casing that one closes the lock mechanism;

Figure 12 is a cross-sectional View taken on line 12l2 of Figure 9 showing the spring catch for retaining the cover plate of the lock in position and the wire or rod that extends from the lock mechanism to the needle valve of the float chamber;

Figure 13 is a perspective view of the key for operating the lock mechanism; and v Figure l iisa detail sectional view showing a tensioned rod interposed between the lock mechanism and the needle valve of the float chamber.

=The object of this invention being the.provision of lock mechanism associated with the carburetorof an automobile to shut off the supply of gasoline to the float chamber and also to shut off'communication between the float and mixing chambers of the carburetor, there is illustrated in Figure 1 an automobile designated by the reference character A which is broken away to show the carburetor B, connecting devices being formed between the carburetor and the lock casing C upon the instrument board D,

operating member E for a part of the cargasoline buretor lock mechanism that extends between the carburetor and the instrument board.

As shown in Figure 2 the carburetor B comprises a float chamber 1 and a mixing chamber 2 that communicate with each other by means of the passage 3 shown in Fi 5. The float chamber 1 is supplied in the usual manner through bottom pipe connection l, the chamber 1 containing the float 5 that is guided in its movement by the needle valve 6 with which the counter-balanced weights 7 are associated for lowering the nee-c lo valve 6 to its closed position when, the float 5 rises to operate the weights 7. As shown in Figures 2 to 5, a sleeve 8 rotatably supported in the float chamber 1 in frictional contactwith the inner face of the float chamber wall and said sleeve has an opening 9 adjacent lower end that registers with the passage 3 to furnish communication bGHVGBll the inte rior of the float chamber ant. the mi in chamber of the carburetor.

i The means tor rotating; the sleeve 8 for moving the open 9 therein into and. out oli connmurica.on with the passage 3 shown. more ole y n Figure 2 and comprises an arm 10 projecting laterally of the upper end of the sleeve 8 and extending through the inclined slot 11 formed in the upper edge of the float chamber wall and in the lower edge of the cover 12 for the float chamber, the inclined slot 11 causing the sleeve 8 when rotated to also be moved downwardly to cause a bind .ing action etween the lower edge of the sleeve and the bottom wall of the float chamher when the opening 9 in the sleeve is displaced from the passage 3 to insure against leakage of gasoline from the float chamber to the mixing chamber. The operating; rod E is pivotally connected at its lower end to the outer end of the arm 10 13 while the upper end thereof that extends through the instrument board D, as shown in Figure l is provided with a handle or button Devices associated with the slee 'e for holding the same in s ifted position with communication between the float and mixing chambers shutoil and such devices form a part of the lock mechanism to be later described, said lock mechrmism beingassociated with the needle valve 6 tor lowering the same upon its valve seat to shut oil the supply of gasoline to the float chamber. WV hen the needle valve 6 lowered to shut off the supply, the counter-balanced weights Tare raised and act in the same manner when operated by the float 5. As shown in Figures 3 and 4i, the hanger brackets 15 that depend from the float chamber cover 12 for pivotally supporting the counter-balanced weights 7, carry at each side thereof, a barrel 1.6 in which. a pin 17 is slidably mounted l spring pressed as at 18. A bail lever 19 1 alinemeut therewith, with the (it. 3'; ends oiv the tensioned pins be rec. red in re cesses 22 in the term of sockets n 1 Iormeu or the -float ch is manually s .c y (303E111iQllllCttllOl bemixing chan1bers, the 11c sleeve are moved into sockets 22 and into sprin pressed pins 1? for locking the sleeve in its adjusted position.

The lock mec that is associate i for the needle val c 6 is in Figures 1 ing a box the inner When the the casing C shown more clearly 6 to let, tie rock casing comprisstructure 23 that is into an opening in the instrument board D, the upper side of the be open and provided with inwardly directed flanges'Q: that'are secured by fastening devices 25, the rectangular facing strip 26 that in turn secured to the instrument board B by the fastening" devices 27. A removable cover pl 's provided for the open side of the box of the lock casing and shown Figures 8 and 9 the cover plate 28 is provided. adjacent one end thereof with a pair of clips 29 upon the inner face that engage the be flan 2-; for retaining one end of t cover in position. The other end of the c *cr 28 carries a ti -shaped strap 30 in which spri pressed pin 31 is slidably mounted, said pin being retracted ag aii st spring tension there on by the lever 32 in a manner scribed. A sliding catch 32 guided in its movement by the member 3% carried by the rectangular facing strip 26 as shown Figures 6 and 12 is projected through a si :l opening in the box 23 with the apertured end thereor moved into position to receive the spring pressed pin 31, tholatch plate being retained against accidental movementby the stud screw 85 Vt ith the latch plate 83 in the position shown Figure 12 the cover 28 is retained in position and when the lever 32 is operated to disengage pin 31 from the latch plate 33, the latter slid laterally away from the pin 31 to permit removal of the cover plate, The lock casing is further secured within the opening in the instrument board by the angle straps 36 attached to the end walls the lock casing and the forward side of he instrument board The cover plate 28 is provide'd'with a central opening in which a lrey be later he- 41 and said sleeves intermediate the ends thereof are formed integral with a disk plate 42. A central opening is formed in the bottom Wall of the lock casing 23 and is surrounded by a metal pipe 43 that extends to the float chamber of the carburetor to inclose the upper end of the needle valve 6 that projects above the float chamber and to be threaded through the cover of the. float chamber as at 44. A wire rod 45 is inclosed by the pipe 43 and has a head '46 on its for Ward end for engagement with the needle valve, the upper end of the wire rod 45 being'flxed to the collar 47 that has an annularly grooved head 48. The collar 47 is detachably connected to the sleeve 41 and disk plate 42 by the latch 49 that is engaged with the grooved head 48 intermediate its ends, the latch 49 being pivotally supported at one end as at 50 upon one sleeve 41 with the other end 51 thereof moved into engagement with the other sleeve, see Figures 9 and 12.

Key operated lock mechanism within the casing 23 is associated with the disk plate 42 and is intended for shifting the disk plate within the casing with the sleeve 47 carrying the operating rod 45 attached thereto by the latch 49. The lock mechanism comprises a plurality of spacer disks 52 having openings therein to be received on the sleeves 41 that enclose the rods 40, the spacer disks 52 having alined peripheral notches 53 formed therein. One or more tumbler bars 54 are spaced by the spacer disks 52and are of a length slightly greater than the diameter of said disks, the several spacer disks 52 and the tumbler bars 54 having central openings 55 therein that are of configuration as shown in Figure 8. One side edge of each. tumbler bar 54 adjacent corresponding ends is provided with a notch 55 that is engaged by the leg extension 57 of the coil spring 57 that is secured to the bottom face of the disk plate 42, the spring tending to move the tumbler bars in one direction and to be limited by the spring end 57 engaging the abutment shoulders of the spacer disk notches 53.

The spacer disks and tumbler bars are e-nan end flange 59 for attachment to the bottom wall of the lock casing 23 and to be re tained in position-by the fastening devices 60. The opposite end of the cylinder 56 has a cut away portion 61 toprovide a ciearance for the lever 32 that controls operation of the spring pressed pin 31 which retains the removable cover plate 28 in position, this arrangement being clearly shown in Figures 11 and 12. When the several spacer disks 52 and tumbler bars 54 have been assembled in the proper manner, the cylinder 56 is then placed in position, the longitudinally extending grooves 56 of the cylinder being alined with the projecting ends of the tumbler bars 54 which permit the cylinder to be placed in enclosing'relation with respect to the lock mechanism. When so disposed, the cylinder 56 is then rotated in the proper direction to move the projecting ends of the tumbler bars 54 into the threaded-portions of the cylinder and the latter is then secured to the bottom wall of the lock casing. Then so arranged, the openings 55 in the spacer disks and tumbler bars properly register to permit the insertion of the key foroperating the tumbler bars. V

The operating key for the locking mechanism is shown more clearly in Figures 10 and 13, the key comprising a rectangular shank 62 havin spacer rings 63 mounted thereon for separating the tumbler key 64, the rings 63 and tumbler keys 64 being retained in positionon the key shank 62 by the key head' 65 that is threaded onto the outer end of the shank. The tumbler keys 64 are positioned on the key shank so that when the key is fully inserted in the lock mechanism through theopenings 55 in the spacer disks 52 and tumbler hars'54, they will be received in the correspondingly shaped openings in the tumbler bars as shown in Figure 10.

, When the spacer disks and tumbler bars are in the positions shown in Figure 12, the disk plate 42 and sleeve members 41 are at their limits of inward movement toward the bottom wall of the lock casing 23 while the wire or rod 45 'is'also forwardly projected to its limit of movement with the head 46 upon the endthereof engaging the upper end of theneedle valve 6 for lowering the same to shut off the supply of gasoline to i the float chamber. It is to be understood that the sleeve 8 in the float chamber wasthe sleeve 8 and entering the sockets 22 in the wall of the float chamber l-retains the sleeve 8 in its shifted position to shut off the supply of gasoline from the float chamber to the mixing chamber 2. lVith the spacer disks and tumbler bars positioned as stated,

the spring extension 57 of the spring 57 retains the ends of the tumbler bars 54 in the threaded portions 58 of the cylinder 56, the lock mechanism then being retained against shitting movement within the lock casing and with the needle valve 6 locked upon its scat. When the tumbler bars 5st have their ends disposed in engagement with the threads 58, the several openings 55 in the spaced disks and tumbler bars are alined with. each other, which enables the position ing of the key through the several openings for the operation of the lock mechanism. lo release the needle valve 6 from its seat, the key is inserted in the lock mechanism and the key tumblers 6st are so disposed on the shank of the key to be received in the similarly formed openings 55 in the tumbler bars when the key is completely inserted in the lock mechanism. Upon turning the key in the proper direction, the tumbler bars 5% are shifted against the tension of the spring 57 to dispose the ends thereof in the diametrically opposite slots 56 in the cylinder 56, the key tumblers 64 being then disposed to extend. across the openings in the spacer disks 52 so that an outward pull upon the key will shift the spacer disks, tumbler bars, disk 42 and the sleeve 4.7 that attached to the disk by the latch 49 to shitt the rod and displace the head 4:6 thereof from ongagement with the upper end of the valve 6. V hen the lock mechanism has been moved toward the cover plate 28 the lock casing, the key is rotated in the reverse direction to move the ends of the tumbler bars 54: into adjacent threads 58 of the cylinder 56, and when the tumbler bars are so disposed, all of the openings 55 in the spacer disks and tumbler bars are alined to permit removal of the key. lVhcn the needle valve (3 is released from its seat, the counter-bah anccd weight 7 descends to retract the spring pressed pins 17 and permit manual shifting of the sleeve 8 to aline the opening therein with the passage 3.

In the operation of the mechanism as shown in Figures 1 to 13 the rod a5 is positively moved in opposite directions into and out of engagement with the needle valve 6, while in Figure 14 which shows modified term or construction, the head 46 of the rod is spring pressed as at 66 which aids in the projection of the rod when the end thereof attached to the sleeve 4-7 is permitted to be shifted toward the bottom wall of the lock casing when the lock mechanism is moved into releasing position.

From the above detailed description of the invention, it is believed that the construction and operation thereof will at once he understood, and while there are herein shown and described the preferred embodiments of the present invention, it is nevertheless to be understood that minor changes may be made therein without departing from the registry r cation 2. carburetorlock mechanism of the tne described lie -0 aerated means for 1 3 l emitting oii' tie supply of gasoline to the p rloat chamber of the carburetor, manuall o, erable means torshutting oft communication between the float and mixing chambers of the carburetor, and means operated by tle kc o1 erated means for locking the manually operable moans shifted position, the manually operable means including a sleeve in the float chamber havi an opening there in movable into a d oi' registry with the passage tori; communication with the mixing chamber. I

3. In carburetor lock mechanism of the type described, key-operated means for shutting off the supply of gasoline to the float chamber of the carburetor, manually operable means for shutting oil communication between the float and mixing chambers of the carburetor, the manually operable means including a sleeve in the tloat chamber having an opening therein movable into and out of registry with the passage forming communication with the mixing chamber, an arm of the sleeve projecting outwardly of the float chamber, and a pull wire attached to the arm.

4. ln carburetor lock mechanism of the type described, key-operated means "for shutting oil the supply ot gasoline to the float chamber of the carburetor, manually operable means for shutting oii' communication between the Heat and mixing chamber of thecarburetor, means operated by the key operated means -tor locking the manually operable means in shifted position, the manually operable means including a sleevein the float chamber having an opening therein movable into and out of registry withthe passage forming communication with the mixing chamber, an arm on the sleeve projecting outwardly of the float chamber, and a pull wire attached to the arm.

5. ln carburetor lock mechanism of the type described, key-operz'ated means for shut-ti oil the supply oi gasoline to the float chanber of the ca uretor, manually operable means for shutting off communication between the float and'mixing chambers of the carburetor, the manually operable meal s including a sleeve in the float chamher having an opening therein movable into and out of registry with the passage forming comniiunication with the mixing chamber, the means operated by the key-operated means comprising tensioned pins Within the float chamber, said sleeve and float chamber having openings adapted to register when the sleeve is shifter to full shut-ofl position, and said pins being moved into said openings raised upon forceful closing of the needle valve in the float chamber.

6. In carburetor lock mechanism of the type described, key-operated means for shutting ed the supply of gasoline to the float chamber or" the carburetor, manually operable means for shutting ofl communication between the float and mixin chambers of the carburetor, means operated by the key operated means for locking the manually operable means in shifted position, the manually operable means including a sleeve in the float chamber having an opening therein movable into and out of registry with the, passage forming communication with the mixing chamber, the means operated by the key-operated means comprising tensioned pins within the float chamber, said sleeve and float chamber having openings adapted to register when the sleeve is shifted to full shut-ofl position, and said pins being moved into said openings when the counter-balance weights are raised upon forceful closing of the needle valve in the float chamber.

7. In carburetor lock mechanism of the type described, shutting off the supply of gasoline to the float chamber of the carburetor, manually operable means for shutting o-fl communication between the float and mixing chambers of the carburetor, the manually operable means including a sleeve in the float chamher having an opening therein movable into and out of registry with the passage forming communication with the mixing chamher, an arm of the sleeve projecting outwardly of the float chamber, a pull wire attached to the arm, the means operated by the key-operated means comprising tensioned pins within the float chamber, said sleeve and float chamber having openings adapted to register when the sleeve is shifted to full shut-off position, and said pins being moved into said openings when the counter balance weights are raised upon forceful closing of the needle valve in the float chamber.

8. In carburetor lock mechanism of the type v shutting oil the supply of gasoline to the float chamber of the carburetor, manually operable means for shutting ofl communication between the float and mixing chamber of the carburetor, means operated by the key operated means for locking the manually operable means in shlfted position, the man when the counter balance weights are,

key-operated means for described, key-operated means for ua-lly operable means including a sleeve in the float chamber having an opening therein movable into and out of registry with the passage forming communication with the chamber, an arm on the sleeve projecting outwardly of the float chamber, a pull wire attached to the arm, the means operated by the key-operated means comprising tensioned pins within the float chamher, said sleeve and float chamber having openings adapted to register when the sleeve is shifted to full shut-ofl position, and said pins being moved into said openings when the counter balance weights are raised upon forceful closing of the needle valve in the float chamber.

9. In carburetor lock mechanismof the type described, key-operated means for shutting ofl' the supply of gasoline to the 'float chamber of the carburetor, manually type described, key-operated means for shutting off the. supply of gasoline to the float chamber of the carburetor, manually operable means for shutting off communication between the float and mixing chambers of the carburetor, means operated by the key operated means for locking the manually operable means in shifted position, the keyoperated means comprising lock mechanism, means between the needle valveof the float chamber and lock mechanism detachably connected to the lock mechanism, and said key moving the lock mechanism and the last named means to space the latter from the needle valve of the float chamber.

, 11. In carburetor lock mechanism of the type described, key-operated means for shutting off the supply of gasoline to the float chamber of the carburetor, manually operable means l'or shutting ofl communication between the float and mixing chambers of the carburetor, the key-operated means comprising lock mechanism, means between the needle valve of the float chamber and lock mechanism detachably connected to the lock mechanism, said key moving the lock mechanism and the last named means to space the latter from the needle valve of the float chamber, the lock mechanism comprising a fixed cylinder, a pair of rods extending through the cylinder, a plurality of spacer disks on the rods, a plurality of tumbler bars separated by the spacer disks and locked to the cylinder, said disks and tumbler bars having similar openings centrally thereof, and a key having tumbler Wards to be received in the opening in the tumbler bars for rotating the latter to displace them from engaged relation to the cylinder.

12. In carburetor lock mechanism of the type described, key-operated means for shutting off the supply of gasoline to the float chamber of the carburetor, manually operable means for shutting off communication between the float and mixing chambers of the carburetor, means operated by the key operated means for locking the manually operable means in shifted position, the key operated means comprising lock mechai'iism, means between the needle valve of the float chamber and lock mechanism detachably connected to the lock mechanism, said key moving the lock mechanism and the last named means to space the latter from the needle valve of the float chamber, the lock mechanism comprising a lined cylinder, a pair of rods extending through the cylinder, a plurality of spacer disks on the rods, a plurality oi tumbler bars separated by the spacer disks and locked to the cylinder, said disks and tumbler bars having similar openings centrally thereof, and a key having tumbler Wards to be received in the opening in the tumbler bars for rotating the latter to displace them from engaged relation to the cylinder.

13. In carburetor lock mechanism of the type described, key-operated means for shutting oil the supply of gasoline to the 'l'loat chamber of the carburetor, manually operable means for shutting oil communication between the float and mixing chambers 01" the carburetor, the key-operated means C01- prising lock mechanism, means between the needle valve of the float chamber and lock mechanism detachably connected to the lock mechanism, said key moving the lock mechanism and the last named means to space the latter from the needle valve of the float chamber, the lock mechanism comprising a fixed cylinder, a pair of rods extending see through the cylinder, a plurality of spacer disks on the rods, a plurality of tumbler bars separated by the spacer disks and locked to the cylinder, said disks and tumbler bars having similar openings centrally thereof, a key having tumbler Wards to be received in the opening in the tumbler bars for rotating the latter to displace them from engaged re lation to the cylinder, and said cylinder having diametrically opposite longitudinally extending grooves into which the ends of the tumbler bars are moved to permit shifting of the lock mechanism.

i l. lln carburetor lock mechanism oi the type described, key-operated means for shutting the supply of gasoline to the float chamber of the carburetor, manually operable means for shutting oil communication between the rioat and mixing chambers of the carburetor, means operated by the key operated means for locking the manually opcreole means in shifted position, the keyoperated means comprising lock mechanism, means aetween tl needle valve of the float chamber and lock mechanism detachably connected to the lock mechanism, said key moving the lock mechanism and the last named means to space the latter from the needle valve of the float chamber, the lock mechanism comprising a fixed cylinder, a pair of rods extending through the cylinder, a plurality of spacer disks on the rods, a plurality of tumbler bars separated by the spacer disks and locked to the cylinder, said d sks and tumbler bars having similar openings centrally thereof, a key having tumbler Wards to be received in the opening in the tumbler bars for rotating the latter to this place them from engaged relation to the cylinder, and said cylinder having diametrically opposite longitudinally extending grooves into which the ends of the tumbler bars are moved to permit shifting of the lock mechanism.

in testimony whereof l atiix my signature.

ALOIS ROSTAS. 

